Grabbows don't need 6 quantum pillars; 5 is more than enough IMO (you can even manage with 4).
I prefer 5 graboids so that your hand isn't clogged early on, but that's just an opinion.
2 flayers consume both precious
(for spirits) and
(for lightning). IMO scrap them.
You should pack two arsenics if you have them, or a mummy if you don't. 1/2 Momentums are also good.
If there's still a space after that, a blessing or a sanctuary can make good use of
quanta